CVE-2013-1302

Microsoft Communicator 2007 R2, Lync 2010, Lync 2010 Attendee, and Lync Server 2013 do not properly handle objects in memory, which allows remote attackers to execute arbitrary code via an invitation that triggers access to a deleted object, aka "Lync RCE Vulnerability."

Published: 2013-05-15 Last update: 2026-04-29 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2013-1302 is rated High Risk (66.3/100): CVSS Critical severity, with high exploitation likelihood (EPSS 44.41%, 97th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2013-1302

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-10-18 56.45% 44.41% -12.04%
2 2025-03-30 64.59% 56.45% -8.14%
3 2025-03-29 — 64.59% —

Full EPSS history (18 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2013-1302

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2013-1302

Affected software / configurations for CVE-2013-1302

Vendor Product Version Raw CPE
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:attendee:*:*:*:*:*
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:x64:*:*:*:*:*
microsoft lync 2010 cpe:2.3:a:microsoft:lync:2010:*:x86:*:*:*:*:*
microsoft lync_server 2013 cpe:2.3:a:microsoft:lync_server:2013:*:*:*:*:*:*:*
microsoft office_communicator 2007 cpe:2.3:a:microsoft:office_communicator:2007:r2:*:*:*:*:*:*

References for CVE-2013-1302

cvelogic Threat Intelligence